package net.xiangcaowuyu.mybatis.service;

import net.xiangcaowuyu.mybatis.entity.Book;

/**
 * @author laughing
 * @date 2020-10-16
 */
public interface BookService {

    /**
     * 查询book
     * @param id 主键
     * @return book
     */
    Book selectByPrimaryKey(Integer id);

}
